var Site = {

    start: function() {
        if ($('accordion')) Site.accordion();
    },

    accordion: function() {
        var list = $$('#accordion li div.collapse');
        var headings = $$('#accordion li h3');
        var collapsibles = new Array();
        var spans = new Array();

        headings.each(function(heading, i) {

            var collapsible = new Fx.Slide(list[i], {
                duration: 200,
                transition: Fx.Transitions.quadIn
            });

            collapsibles[i] = collapsible;
            spans[i] = $E('span', heading);

            heading.onclick = function() {
                var span = $E('span', heading);

                if (span) {
                    var newHTML = span.innerHTML == '+' ? '-' : '+';
                    span.setHTML(newHTML);
                }

                for (var j = 0; j < collapsibles.length; j++) {
                    if (j != i) {
                        collapsibles[j].slideOut();
                        if (spans[j]) spans[j].setHTML('+');
                    }
                }

                collapsible.toggle();

                return false;
            }

            collapsible.hide();
            
            collapsibles[0].toggle();

        });
    }
};
window.addEvent('domready', Site.start);